Many scientists hold the belief that the paradoxes associated with time travel, which have perplexed thinkers for centuries, ...

What does it mean to be to space-time? The seemingly simple question gets to the essence of twentieth-century physics and has ...

Quantum mechanics has always had a way of making even the sharpest minds stop and scratch their heads. In the everyday world, ...

A new theory explores the idea that time travel creates its own destruction by introducing instability into certain realities ...

Are black holes tunnels to other locations in spacetime? Are they wormholes connecting different regions of the universe? A study has provided a clear answer to this question. The remainder of this ...

Black holes are inescapable traps for most of what falls into them — but there can be exceptions. The theoretical physicist Leonard Susskind speaks with co-host Janna Levin about the black hole ...

Parrondo's paradox applied in cancer therapy: alternating high and low chemotherapy doses may improve long-term effectiveness ...

One of the most important paradoxes in physics is Schrödinger's Cat. At the microscopic level, light and particles behave according to quantum mechanics. This allows them to be in two places at ...

When a German physicist returned from a health retreat 100 years ago, his ideas sparked a debate about reality, and gave rise to quantum mechanics — the "spooky" science of the very small.

The dream of time travel has fueled stories, films, and scientific debates for generations. The idea that you could step into ...

There is a concept known as "the bicyclist's paradox" in physics education circles: if one bikes up a hill and back down, and there is no net change in elevation, one might intuitively expect that ...